Effect of 1-MCP on quality attributes of Red Delicious apples under non-refrigerated and refrigerated conditions of storage.

摘要

An experiment was conducted at the Division of Post Harvest Technology, SKUAST-K, Shalimar to evaluate the storage response of Red Delicious apples to post-harvest application of 1-MCP. Physiologically mature Red Delicious apples harvested after 158 days from full bloom were treated with 1-MCP (1 ppm) for 24 h under small scale airtight plastic tent at 14+or-2 degrees C. The treated fruits along with untreated fruits were subsequently stored under two storage conditions i. e. non-refrigerated (12+or-2 degrees C) and refrigerated (0-2 degrees C) conditions for monitoring quality changes. The studies indicated that quality attributes like fruit firmness, juiciness and TSS and acidity were retained in treated samples up to 110 days while as to untreated apples retained the same quality parameters up to 30 days, thus the shelf life of treated apples was increased by 80 days under non-refrigerated conditions (12+or-2 degrees C). Similarly, under refrigerated conditions 1-MCP treated fruits retained maximum quality attributes up to 270 days, while as untreated fruits retained quality attributes up to 180 days thus storage life was increased by 90 days. Post cold storage deterioration in 1-MCP treated apples was very slow as compared to untreated fruits. Maximum quality parameters in 1-MCP treated apples were retained up to 14 days of ambient storage (22+or-2 degrees C) after refrigerated storage of 270 days, while untreated fruits retained quality parameters up to five days.